On Price Dynamics in International Wheat Markets

Extending the previous work by Bessler et. al. (2003), this paper examines dynamic relationships in the international wheat markets by employing five different base (country) currencies and a basket of currency. The stable aggregate currency (SAC) is proposed as the basket currency to be used in examining wheat price dynamics as opposed to individual base currencies or other possible baskets. Employing directed acyclic graphs and standard moving average representations, we compare the results from the SAC currency to those from prices converted in five base currencies. The findings are dependent upon the base currency choice; however, in all cases Canada is the dominant power in affecting world wheat price, whereas, the price innovations pass through the U.S. and Australia to the rest of the world. Furthermore, Europe and Argentina are information “sinks” as they receive but do not transmit new information. A possible latent variable associated with wheat pricing in the European Union appears to mediate information flows between Europe and Argentina and between Europe and Australia. Given the stability and low correlation properties of SAC, it is proposed to use SAC when studying price dynamics across countries.

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 Record created 2017-04-01, last modified 2019-08-29

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